:root {
            --primary: #1a237e;
            --secondary: #ff6f00;
            --accent: #4caf50;
            --light: #f5f5f7;
            --dark: #121212;
            --text: #333333;
            --text-light: #666666;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --radius: 12px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background: linear-gradient(135deg, #f8f9ff 0%, #ffffff 100%);
            min-height: 100vh;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--primary);
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo {
            font-size: 2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.5px;
        }
        .logo i {
            color: var(--secondary);
        }
        .logo span {
            background: linear-gradient(90deg, #ff6f00, #ffab00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
        }
        nav a:hover, nav a.active {
            color: var(--secondary);
            border-color: var(--secondary);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .breadcrumb {
            background: var(--light);
            padding: 15px 0;
            border-bottom: 1px solid #e0e0e0;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 10px;
            color: var(--text-light);
        }
        main {
            padding: 40px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--primary);
            font-size: 2.5rem;
            line-height: 1.2;
            margin-bottom: 20px;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 15px;
        }
        h2 {
            color: var(--primary);
            font-size: 1.8rem;
            margin: 35px 0 20px;
            padding-top: 10px;
            border-top: 2px dashed #e0e0e0;
        }
        h3 {
            color: var(--secondary);
            font-size: 1.4rem;
            margin: 25px 0 15px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.08rem;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--primary);
            font-weight: 600;
            background: linear-gradient(90deg, #e3f2fd, #f3e5f5);
            padding: 20px;
            border-radius: var(--radius);
            border-left: 5px solid var(--accent);
            margin: 30px 0;
        }
        .highlight {
            background: #fff8e1;
            border-left: 4px solid #ffb300;
            padding: 15px 20px;
            margin: 25px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat {
            background: var(--light);
            padding: 20px;
            border-radius: var(--radius);
            text-align: center;
            border: 2px solid #e0e0e0;
            transition: var(--transition);
        }
        .stat:hover {
            border-color: var(--accent);
            transform: translateY(-5px);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
            line-height: 1;
        }
        .stat-label {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-top: 8px;
        }
        .feature-image {
            width: 100%;
            border-radius: var(--radius);
            margin: 30px 0;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
            transition: var(--transition);
        }
        .feature-image:hover {
            transform: scale(1.01);
            box-shadow: 0 12px 30px rgba(0,0,0,0.2);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: -20px;
            margin-bottom: 30px;
            font-size: 0.95rem;
        }
        aside {
            position: sticky;
            top: 120px;
            height: fit-content;
        }
        .widget {
            background: white;
            border-radius: var(--radius);
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: var(--shadow);
        }
        .widget h3 {
            color: var(--primary);
            font-size: 1.3rem;
            margin-top: 0;
            border-bottom: 2px solid var(--light);
            padding-bottom: 10px;
            margin-bottom: 20px;
        }
        .search-box {
            position: relative;
        }
        .search-box input {
            width: 100%;
            padding: 15px 20px;
            border: 2px solid #e0e0e0;
            border-radius: 50px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-box input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.2);
        }
        .search-box button {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--accent);
            color: white;
            border: none;
            width: 45px;
            height: 45px;
            border-radius: 50%;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: var(--primary);
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 1.8rem;
            color: #ffb300;
            margin: 15px 0;
            letter-spacing: 5px;
        }
        .rating-form select, .rating-form textarea {
            width: 100%;
            padding: 12px;
            margin: 10px 0;
            border: 2px solid #e0e0e0;
            border-radius: var(--radius);
            font-family: inherit;
        }
        .rating-form button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            width: 100%;
            transition: var(--transition);
        }
        .rating-form button:hover {
            background: var(--primary);
            transform: translateY(-3px);
        }
        .comment {
            border-bottom: 1px solid #eee;
            padding: 20px 0;
        }
        .comment:last-child {
            border-bottom: none;
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 10px;
        }
        .comment-author {
            font-weight: 600;
            color: var(--primary);
        }
        .comment-date {
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .comment-form textarea {
            width: 100%;
            padding: 15px;
            border: 2px solid #e0e0e0;
            border-radius: var(--radius);
            font-family: inherit;
            min-height: 120px;
            margin-bottom: 15px;
        }
        .web-links {
            background: var(--light);
            padding: 40px 0;
            margin-top: 50px;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }
        .web-link {
            background: white;
            padding: 20px;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .web-link a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            display: block;
        }
        .web-link a:hover {
            color: var(--secondary);
            text-decoration: underline;
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 50px 0 20px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            nav.active {
                max-height: 300px;
                margin-top: 20px;
            }
            nav ul {
                flex-direction: column;
                gap: 0;
            }
            nav li {
                width: 100%;
            }
            nav a {
                display: block;
                padding: 15px 10px;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2rem;
            }
            article {
                padding: 25px;
            }
            .stats-box {
                grid-template-columns: 1fr;
            }
        }
        .btn {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary), #283593);
            color: white;
            padding: 14px 30px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(26, 35, 126, 0.3);
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(26, 35, 126, 0.4);
        }
        .btn-secondary {
            background: linear-gradient(135deg, var(--secondary), #ff8f00);
        }
        .tooltip {
            position: relative;
            border-bottom: 1px dashed var(--primary);
            cursor: help;
        }
        .tooltip:hover::after {
            content: attr(data-tooltip);
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%);
            background: var(--dark);
            color: white;
            padding: 10px 15px;
            border-radius: 8px;
            font-size: 0.9rem;
            white-space: nowrap;
            z-index: 100;
        }
        .emoji {
            font-size: 1.2em;
            margin: 0 5px;
        }
        .term {
            background: #e8f5e9;
            color: #2e7d32;
            padding: 2px 8px;
            border-radius: 4px;
            font-family: 'Courier New', monospace;
            font-weight: 600;
        }
        .quote {
            font-style: italic;
            border-left: 4px solid var(--secondary);
            padding-left: 20px;
            margin: 25px 0;
            color: var(--text-light);
        }
        .author {
            font-weight: 600;
            color: var(--primary);
            margin-top: 10px;
            text-align: right;
        }